Get Viewport Size always returns the same resolution - r.MobileContentScaleFactor and r.MobileOnChipMSAA does not seem to have an effect.
I had an issue with the left eye not being rendered - it seemed the fact that i suddenly had r.MobileContentScaleFactor=0 and r.MobileContentScaleFactor=1 in the same config caused this issue.
No changes to texturesampling. Videotextures alias really hard in the distance on the S7. On the S6 everything looks really good??!??!